x402
Verified
HTTP 402 payment standard for agent-to-agent commerce and micropayments.
About x402
x402 is an open protocol that implements the HTTP 402 Payment Required standard for AI agent-to-agent transactions. It enables micropayments between autonomous agents, allowing them to pay for services, data, and compute on the fly. A foundational building block for the emerging agent economy.
GitHub: github.com/x402-protocol
Key Features
- HTTP 402 payment standard implementation
- Agent-to-agent micropayments
- Open protocol for agent commerce
- Supports multiple payment rails
- Developer SDK and documentation
Pros & Cons
Pros
+ Solves real problem of agent payments
+ Open standard — not locked to any platform
+ Growing ecosystem adoption
Cons
- Very early stage technology
- Requires crypto/blockchain knowledge
- Limited real-world adoption so far
Use Cases
Agent-to-agent paymentsMonetizing AI skills and dataBuilding agent marketplacesMicropayment infrastructure
Pricing
Open source
Free and open-source protocol.
Who It's For
AI agent developersProtocol designersBlockchain developersAgent economy builders
Details
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